Manufacture of paper boxes



| l B I M. GALLY.

Patented June 4, 1895.

v 1 I F1311;- a

J l B l I I A! I E E li l I I 1.5: "I'll MANUFACTURE OF PAPER BOXES.

(No Model.)

UNITED STATES PATENT OFFICE.

MERRITT GALLY, OF BROOKLYN, NEW YORK.

MANUFACTURE OF PAPER BOXES.

SPEGIFICATION forming part of Letters Patent No. 540,242, dated June 4,1895.

Application filed June 12, 1894. Serial No. 1 4,298- (No model.)

To all whom it may concern: Be it known that I, MERRITT GALLY, residingat Brooklyn, in the county of Kings and State of New York, have inventedcertain new and useful Improvements in the Manufacture of Paper Boxes,of which the following is a specification, reference being had to theaccompanying drawings.

Theinvention relates to the manufacture of boxes from paper, pasteboardand similar materials, in cutting said material to form the box-blanks,and in performing the initial process for producing the foldings of theboxes in their proper positions.

In the accompanying drawings, Figure 1 is a plan view of the cuttingform or die, having die-plates attached to the body of the form. Fig. 2is a plan view of the platen or cuttingplate of a press on which arecounter-bend ing plates. Fig. 3 is a longitudinal section taken on lineN of Fig. 1. Fig. 4: is a longitudinal section taken on line D of Fig.2. Fig. 5 is a sectional View showing creasing-die, box material, andchanneled packing, forming a counter-die on face of platen orcuttingplate, exhibiting old method of creasing; and Fig. 6 is asectional view showing the body of form with die-plate attached, boxmaterial, and counter-bendin g plate, exhibiting the new process forproducing the initial bend, securing the line of final folding.

In the ordinary method of preparing blanks for folded paper boxes, acutting and creasing form or die is made up of sharp cutting rules, andthicker blunt-edged embossing rules, and printers furniture or blocks ofeither wood or metal, in similar manner to the making up of a type-formfor printing. This form is placed upon the bed of a printing or cuttingand'creasing press; and a thick paper packing is built up on the platen,made usually of several sheets of paper pasted one upon another, insimilar manner to forming an ordinary embossing counter. The bluntembossing rules of the form are then beaten into the packing by repeatedimpressions, While the packing is drying, forming embossing-channels asa female counter-die, into which the blunt rules of the form register asa male die. The compressed material in the bottom of the channels isusually cut out, in order to deepen the channels to make room for theembossed lines of the box-material to be embossed. The'cutting rulessever the box material for the boundary lines of the box blank, and theembossing rules emboss deep groove-like lines in one side of thematerial which is pressed into the channels of the counter, the otherside of the material showing raised ridges. The embossed grooves of thematerial form and determine the lines on which the material is finallyto be bentfor the foldings of the box to be formed, and as the materialin the groove is stretched by the act of embossing, it is made more limpthan the body of the box and is therefore easily bent. This method ofconstruction I find to be defective, first, in the fact that the deepgrooved lines in one side of the material, or the raised ridged lines onthe opposite side of the material, mar the beauty of a fine box, and,secondly, that the stretching of the material in the grooved lines makesthe angles of the box weaker than other parts of the material, while thecontrary should be the case in order to produce a good box. Further, inusing cheap material having short fiber, when dry, the material isbroken in its fiber instead of being stretched, and is thus greatlyinjured. Preparing the forms and counters for this process, is also tooexpensive. It is very difficult to make up a form of both cutting andembossing rules and secure the exact relative positions of the cuttingand the embossing lines. This requires not only expert workmen, butconsumes a great amount of time. Much time is also used in beating upthe counter, and in cutting out the channels, any of which, if not cutwith careful exactness, produces defects in the angles of the box.

In my improved process, I use either a solid cutting die, or, ifconstructed of rules, use only the cutting rules, a block and furniture.In the latter case, a single block is usually sufficient for forming thebody of the cutting die. This block, made of even thickness, 1.

saw to the shape of the box-blank to be made, and make saw-cuts in orextending into the block to receive the pieces of cutting rule which areto produce the cuts in the boxblank which lie within its boundary line.The cutting rules then placed around the "boundary line of the block andlocked into the chase with furniture completes the ICO Fig. 1. The formof these plates is immaterial, except that a part of their outline shallconform to the desired folding line to be-p'ro= duced, and that room isleft for the counterbending plates B of Fig. 2 re resentedm Fig. 1 bythe dotted lines. I fully constructed the bending-plates B, Fig. 2 areglued or otherwise attachedkto" the face of the platen H, Fig-2 This maybe done by first taking. an impression of the" cuttingform on athin-sheet of paper attached to the face of the'platen as agu'ide; or,by measurement, or, in the following pret'er'ablemanner: I first attachto one ofthe surfacesof the plates B,-two-' or three small pieces ofpasteboard or card, sufficiently thick that Whenplaced against the fa'ceof the die-block, they will bri'n gthe' outer face of the p'l'ateB alittle higher than the cu-tti ng edge ofi the cutting-rules.- Thengputti'ng' a small quantity of glueor' paste on these smaltpieces'ofcard, I attach the plates B,thus prepared-to theface of the die-block inposition, line to line, with the d'ie-plates-A, as shown by the dottedlines in Fig. 1-. Inpl'aci ng the plates 13,-I hold a piece of cardbetween the: edges of platesA- and plates Emmet-ward mustbe' a littlethinner than the material of which the blanks'areto be made. I then coattheou'ter surface of all: the: plates B w'ith thic'k glue; or otheradhesive material,- and' them bring th e platen of the press to animpression against them. The greater adhesi veness'of theglued surfacesofthe-plates B tot'h'e face of platen; will, when the platen isremoved", tear away the small piecesof pasted card, and leave the platesB in exact workingposition on the platen. I now remove the small piecesof card from the face of the plates B, and the en tireapparatus is readyfor use. The plates 13' may be'constr'ucted of metal,-wood, hardcard-board or any suitable; hard material. To insure smoothness in theinitial bend of the material of the bo'x-blank the sharp' ang le line ofthe plates A and B may be slightly rounded.

The device'sfor creasing the box-blanks ployed, are shown inFig. 5. O isa part of The form now being the-form made up of blocks or furniture 5rule 8 is forcingthe box material 6 f, stretch- "ing the material andmaking in it a deep sunken line on one side and a ridge on the 5 otherside.

My new and improved devices for producing an initial bend in thebox-material for tached thereto.

. determining the position of the final foldings,

are shown in Fig. 6. G is a part of the bodyblbck oft'he form, and A isthe die-plate at- The line a: y represents the face of the platen andisthebending-plate attached theretet The box material e'f is shown withthe: initial bend made therein,

pressed between the edges of the die-plate A and thebendi-ng plate- BMyp-rocess not only m'akesa much better and-stronger hox,-b'ut resultsin agreat saving over the ordinary processes which produce embossedlines. By actualtest with the'same workmen, I find a saving of overfifty per cent. of time in constructing the formor-die. I find alsoasaving of over sixty-five per cen-t.of time in making ready the platen:

What I claim as new and of my invention L In aform or die forshapin'gbox blanks, the combin ation with cutting-rules and a body-block orblocks; of die-plates laid fiatwise on. the body-block or blocks andattached thereto; I

2; In an apparatus adapted to'a bed-andpl atenpre'ss, for simultaneouslycutting and creasing box-blanks, the'form-or' die made up of cutti ngrules; a bOdy-block or blocks and die-plates; in combination with theplaten or platen=plate provided with coacting' bendingplat'es;substantiallyas set forth.

3'. In an apparatus adapted to a bed-and platen pres's,-- forsimultaneously cutting and creasingbox-bla'nkaa form or die made up ofcutting-rules, a bodyblock or blocks and die plates in co'mbinati'onwith the platen or platen-plate provided with coactingbendingplates for'prod u'cing the -initial lines'on which the box-blankis to be folded; the face of the platen or platen-plate serving atthesame time as a base against which the edges of the cutti-n'g-rulesactin severing the material to formthe blank substantially as specified.MERR'IT'I GALLY. Witnesses:

D; B. GALLY, JNO. ROBINSON.

